Low blood pressure can affect sleep, because patients with low blood pressure will have clinical symptoms of hypoperfusion, that is, insufficient blood perfusion in the capillaries, so there will be a significant neurological blood supply insufficiency, and for a long time it will lead to vegetative nerve dysfunction, and therefore will affect sleep. Patients may experience dizziness, headache, lack of concentration, memory loss, blurred vision, pallor, and other symptoms. In severe hypotension, there will be serious disorders of the vegetative nerve function and there will be obvious clinical symptoms and reactions such as insomnia and excessive dreams. In addition, if the patient in severe hypotension, if the vegetative nerve function disorder affects the sleep, must actively correct the blood pressure, treatment of the original disease can improve the quality of sleep.